Superhydrophobic Cerium-Based Coatings on Al-Mg Alloys and Aluminized Steel Guerrero Vaca, Guillermo Rafael Rodríguez Valverde, Miguel Ángel Montes Ruiz-Cabello, Francisco Javier Aluminized steel Aluminium-magnesium alloy Superhydrophobic surfaces Sandblasting Cerium coating Electrodeposition Aluminum-magnesium (Al-Mg) alloy and aluminum-coated steel (aluminized steel) are typically used for the manufacturing of baking trays and molds. For these applications, these materials must be modified to develop release and hydrophobic properties. With this aim, the bare substrates are typically coated with low-surface energy materials such as fluoropolymers, elastomers, or sol-gel layers. In this work, some alternative strategies to prepare these functional surfaces are presented. We used three-step processes involving (i) micro-texturing, (ii) nano layer deposition through immersion and electrodeposition, and (iii) hydrophobization. The raw substrates were sanded or sandblasted at the micro scale, accordingly. Texturization at the nano scale was achieved with a cerium layer formed by electrodeposition or solution immersion. The cerium layers were hydrophobized with fatty acids. The wetting properties of the samples were studied with tilting-plate and bouncing drop methods. We measured the surface roughness of the samples by contact profiling and analyzed their surface morphology using a field emission scanning electron microscope (FESEM). The elemental chemical composition of the samples was analyzed by energy-dispersive X-ray spectroscopy (EDX). The wettability results indicated that the best performance for the Al-Mg substrates was reached by sandblasting and later immersion in a cerium nitrate solution. For aluminized steel substrates, the best results were obtained with both electrodeposition and immersion methods using a cerium chloride solution. 2020-01-31T12:47:39Z 2020-01-31T12:47:39Z 2019-11-20 journal article Guerrero-Vaca, G., Rodríguez-Valverde, M. A., Castilla-Montilla, P., Alguacil-Salamanca, F., Rodríguez-Alabanda, Ó., Romero, P. E., ... & Montes Ruiz-Cabello, F. J. (2019). Superhydrophobic Cerium-Based Coatings on Al-Mg Alloys and Aluminized Steel. Coatings, 9(12), 774. http://hdl.handle.net/10481/59339 10.3390/coatings9120774 eng http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España MDPI